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When to use volatile with multi threading?

.... However two threads both accessing a shared variable is something which calls for protection via a mutex isn't it? But in that case, between the thread locking and releasing the mutex the code is in a critical section where only that one thread can access the variable, in which case the variable ...
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Disabling swap files creation in vim

...ere a way to disable .swp files creation in vim? or at least create them all in one place so I can find and delete them easily. ...
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How do I remove the last comma from a string using PHP?

...This doesn't work in a loop that adds a comma at the end as it will remove all the commas. – LizardKG Mar 11 at 21:35 add a comment  |  ...
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Python glob multiple filetypes

...out: import glob types = ('*.pdf', '*.cpp') # the tuple of file types files_grabbed = [] for files in types: files_grabbed.extend(glob.glob(files)) # files_grabbed is the list of pdf and cpp files Perhaps there is another way, so wait in case someone else comes up with a better answer. ...
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How can I calculate the difference between two dates?

... Not all days have 86400 seconds. For a trivial example that's fine but it's not a good idea in the real world. DST changes, leap seconds, etc can all mess with it. NSCalendar can tell you how many seconds are in a given day. ...
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How do I convert an NSString value to NSData?

...t Developer coming here, to convert from NSString / String to NSData var _nsdata = _nsstring.dataUsingEncoding(NSUTF8StringEncoding) share | improve this answer | follow ...
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How do I clear the terminal screen in Haskell?

...nal support, with Windows compatibility You can find it in Hackage and install using cabal install ansi-terminal. It specifically has functions for clearing the screen, displaying colors, moving the cursor, etc. Using it to clear the screen is easy: (this is with GHCI) import System.Console.ANSIclea...
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Matrix Transpose in Python

...g'), ('b', 'e', 'h'), ('c', 'f', 'i')]? – acollection_ Feb 28 '16 at 3:15 14 ...
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What does “:=” do?

... http://en.wikipedia.org/wiki/Equals_sign#In_computer_programming In computer programming languages, the equals sign typically denotes either a boolean operator to test equality of values (e.g. as in Pascal or Eiffel), which is consistent with the symbol's ...
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jquery: $(window).scrollTop() but no $(window).scrollBottom()

...'s answer below). What this gives is the # of vertical pixel from document _top_ to the visible window Bottom. It is useful for sure, though can't call it the opposite to ScrollBottom (I know this is a marked answer but for future readers like myself) – DeepSpace101 ...